Second government of Segismundo Moret

The second government of Segismundo Moret was formed on 30 November 1906, following the latter's appointment as prime minister of Spain by King Alfonso XIII on 28 November and his swearing-in two days later, as a result of the "crisis of the letter" (crisis del papelito) having led to José López Domínguez's resignation from the post on 28 November. It succeeded the López Domínguez government and was the government of Spain from 30 November to 4 December 1906, a total of 4 days.

The cabinet comprised members of the Liberal–Democratic alliance, one independent and one military officer. In one of the shortest governments in Spanish history, Moret's entrustment of power caused widespread criticism: his move to send a letter to the King surreptitiously warning him against the perceived dangers of López Domínguez's Law of Associations—criticized by the Catholic Church as "anti-clerical" due to its restriction of religious orders—was perceived as a maneuver to disavow and bring down the late prime minister, prompting his resignation and earning Moret both distrust within his party and disapproval remarks from the monarch himself.

Having been rejected by several high-profile Liberal members during the cabinet's formation, internal turmoil within his party—with resignation threats from the presidents of the Congress and Senate (José Canalejas and Eugenio Montero Ríos, respectively) and the tabling of a motion of no confidence in the Senate by members of his own group—forced Moret to preemptively resign on 3 December to avoid a major parliamentary defeat.